Demountable rim.



i'. & N. M. SPRANGER.

DEMOUNTABLB RIM.

APPLICATION FILED JAN.11,191&

1,069,849, Patented Aug. 5, 1913.

ZSHBETS-SEEETl.

F. & N. M. SPRAN'GER.

DBIMIOUNTABLE RIM. APPLICATION FILED JAN.11, 1912.

1,069,349, Patented Aug. 5, 1913.

2 SHEETS-SHEET 2.

// d@ 9 A /f i fin/ I l mue/nto@ wi/Mmmm 6/47 1@ 9u, w. taug. /C 06 l@fd/7 er,

64W 0% /OM 5511 I 4 C11/Nonne@ UNITED' STATE-s PATENT ernten.'

FRANK SPRANGER AND NICHOLAS M. SPRANGER, DETROIT; MICHIGAN.

DEMOUNTABLE RIivi.

Specification ofLettersPatent.

lPantea Aug.'5 ,1913.

Application led January 11, 1912. Sera1No.670,683. v

To all whom/t may concern: I

lBe it known that we, FRANK SPRANGER and NioHoLAs M. Sriunsenna citizens of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and.

useful Improvements in Demountable Rims, ofI which the following is a specification, reference being had therein to. the accompanying drawings.

Thisinvention relates to improvements in demountable'rims for vehicle wheels and more particularly to .means for securing such rims in place and for quickly detaching and removing the same.

The objects of the invention are to provide a simple, compact and quickly operated mechanism for the purpose so arranged as to securely lock the rim in place and aid in its removal, and to provide certain new and useful features in the construction and arrangement of parts.

To these'ends the invention consists in the matters hereinafter more fully set forth and more particularly pointed out in the claims reference being had to the accompanying drawings in which- Figure 1 is a side elevation of a vehicle wheel having in place vthereon a rim construction embodying the invention; Fig. 2 is an enlarged detail of a portie-nef the wheel rim and fastening means, with parts broken away to show the construction and the fasteningr means in locked position; Fig. 3 is a similar view showing the fastening means in unlocked position; Fig. 4 is a side elevation of the same; Fig. 5 is a transa Wood felly 2-and secured in the usualmanner upon the wood felly is a channel iron rim 3, one of the side flanges 4 of which is provided with pairs of notches 5 at three or more points around the rim of the wheel. These pairs of notches form between them lugs 6 which in 'tu 'n are eachprovded with an opening forming one bearing for a screwthreaded bolt 7 which extends across Y the' channel rim and has a bearing in the opposite flange thereof. Each of these screw bolts is provided with a nut or head 8 at one `end to holdthe bolt' in place in its bearings and permit the same to turn freely therein and at its opposite endis provided with a squared head 9 for the engagement -of a wrench or other tool for turning the bolt.

' l0 is a demountable rim of the usual form and construction provided with inturned edge flanges l1 to engage and hold a pneumatic or other tire in the usual mannen Rivet-ed o-r otherwise secured upon the inner" face of this demountable rimv are-blocks l2 arranged in pairs corresponding to the pairs of notches in the flange 4 of the channel lrim to slide through said notches when the' demountable rim is slipped laterally into place upon the channel rim andto engagev said notches when 1n place and prevent thel demountable rim from turning uponthe channel rim. These blocks 12 are of such a length that when the demountable rim is in place, they abut at one end the continuous flange of the channel rim and lie within the notches 5 at their opposite ends, thus centering the demountable rim laterally upon the channel rim and preventing it from turning thereon.

Each pair of blocks 12 is formed in their i adjacent sides .with notches 13 adapted to be engaged by dogs 14 which are pivotally secured intermediate of their ends to the channel rim, one at each side of each screw bolt,

7. These dogs are each formed at one end to fit within thecorresponding notch 13 in the adjacent block 12 when the detachable rim is in place and at their opposite end are formed with a laterally extending lug 15 adapted to be engaged by a nut 16 upon the screw bolts 7 Each yof these nuts 16 is prevented from turning upon the screw bolt by its engagement with the' bottom-channel rim and it is formed with slanting sides 1-7 to engage the slanting edges of the dogs and form a wedge to move between the dogs and positively force said dogs to turn upon their pivots llaterally each way from the screw l bolts into engagement with the notches 13 in the adjacent blocks 12. The movement of the nut 16 in one direction by thel turning of the screw.- bolt,-`mov`es its inclined or cam sides into engagement with the sides of the loo 

